webadmin: radiobutton text is truncated & unaligned

Discovered in pt-BR locale

Cluster dialog: radio buttons labels in "optimization" section
are truncated and unaligned for long text

Change-Id: I5bd4ef709ada858140cd33d909aed3dc3171f6df
Bug-Url: https://bugzilla.redhat.com/1018382
Signed-off-by: Gilad Chaplik <gchaplik@redhat.com>